
/* Copyright (c) 2007-2017, Tobias Wolf <twolf@access.unizh.ch>
 *                          Stefan Eilemann <eile@equalizergraphics.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name of Eyescale Software GmbH nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef PLYLIB_VERTEXDATA_H
#define PLYLIB_VERTEXDATA_H

#include "typedefs.h"
#include <triply/api.h>
#include <vector>

// defined elsewhere
struct PlyFile;

namespace triply
{
/*  Holds the flat data and offers routines to read, scale and sort it.  */
class VertexData
{
public:
    TRIPLY_API VertexData();

    TRIPLY_API bool readPlyFile(const std::string& file);
    TRIPLY_API void sort(const Index start, const Index length,
                         const Axis axis);
    TRIPLY_API void scale(const float baseSize = 2.0f);
    TRIPLY_API void calculateNormals();
    TRIPLY_API Axis getLongestAxis(const size_t start,
                                   const size_t elements) const;

    void useInvertedFaces() { _invertFaces = true; }
    std::vector<Vertex> vertices;
    std::vector<Color> colors;
    std::vector<Normal> normals;
    std::vector<Triangle> triangles;

private:
    void readVertices(PlyFile* file, const int nVertices,
                      const bool readColors);
    void readTriangles(PlyFile* file, const int nFaces);

    bool _invertFaces;
};
}

#endif // PLYLIB_VERTEXDATA_H
